I have my wheels for sale with brush aluminum finish and chrome lip in excellent condition, no curb rash.

It fits E92 and E90 with spacers. I don't know the offsets since Klassen disclose the offset.

The size is 20x8.5 and 20x10.5. Comes with Falken FK452 Front: 235/30/20 Rear: 255/30/20. (both less than 1000 miles)
Willing to let go for $3000 + shipping.
Let me know if you have any question.
Here are couple pictures of the wheels on my car: